First off, it's all good. I understand your point, and I suspect you understand mine. There's a difference between an actual bass part played by a bass and "good bass representation" as you call it. I was trying to suggest some stuff with traditional bass and/or bass guitar playing...kind of a shortcut. As far as where blues bass started, I'd have to say a piano player's left hand.
I like a lot of John Lee Hooker, but I wouldn't suggest anyone dig through the hundreds of albums (that gets expensive and time consuming) looking for cool bass parts. I would like to know who played bass on "I'm in the Mood", btw...that's great.
The solo acoustic guys (SAGs?) are fine to listen to, but I wouldn't look there FIRST for bass lines. You mentioned Son House and Charlie Patton. Their "Empire State" and "Future Blues" have similar prominent bass parts, the best examples that come to mind right now. It weird you talked about Son's "Preachin' Blues". I guess that's on the album made in the mid-60s...I was thinking about that song earlier this week.
I think the OP has more to gain bass wise from Wolf, Keith Ferguson, Duck Dunn, Larry Taylor and Jerry Jemmott.
I found this guy on YouTube a while back, I think you'll like him bass, parts and all.
http://youtube.com/watch?v=X5LHs27u0y0